Please Help....

I have a question.. I have recorded my new album in the key of E.. Is there a way to make the guitar and other instruments sound like they were tuned to F.. I have tried using the pitch shift.. But when I play it back, It sounds muddy and far away.. I really don't want to re-record the whole album again..
Thanks..

Unfortunately, there's not a lot you can do if it was all acoustic instruments (with MIDI this is quite easy). The best pitch correction plug-in I've used is Wave Mechanics' Pitch Doctor, but even with this I don't think you'll be satisfied with the outcome. There's really nothing good enough to "correct" multitimbral material.

If you don't mind the whole album being sped up by 1.0594630943592952645618252949463, and have some of the >10kHz regions butchered somewhat, you could try speeding up the entire recording by that ratio above.